A quotation from Russell, Bertrand:

«
Instinctively we divide mankind into friends and foes — friends, towards whom we have the morality of co-operation; foes, towards whom we have that of competition. But this division is constantly changing; at one moment a man hates his business competitor, at an…
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Full quote, sourcing, notes:
https://wist.info/russell-bertrand/71301/

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